The CLR was designed from the start to provide optimized performance. By using 100% managed code, you can take advantage of the numerous built-in services of the CLR to enhance the performance of your managed application.
Because of the runtime services and checks that the CLR performs, applications do not need to include separate versions of these services.
Performance and scalability may be impacted by many different factors, from application architecture to tuning options to the software itself. Using 100% managed code eliminates the need to call COM components. In managed code, all the data, logic and processing reside within the CLR. 100% managed code eliminates dependencies on native vendor code.
Applications built from managed code can call COM components and other unmanaged code. However, the cost can become very expensive because of extra security checks.
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